Results 161 to 170 of about 7,256 (207)

Quantum System for Generating Random Phase-Manipulated Emissions with a Controllable Electromagnetic Center. [PDF]

Sensors (Basel)
Litchkov N, Kurtev M, Mladenov A.
europepmc   +1 more source

Building QKD Networks Based On a Novel QKD Scheme

2008 IEEE International Conference on Networking, Sensing and Control, 2008
We present a new quantum key distribution (QKD) scheme using EPR pairs and Bell state measurement, accompanied by quantum one-way function. The security of our scheme derives from BB84 protocol, and several other features make our QKD scheme fairly suitable for QKD network designs.
Fang Song 0001, Liusheng Huang, Wei Yang 0011, Kan Yang 0001   +3 more
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QKD and frequency distribution cooperation: the Twin-field QKD case

2022 IEEE 15th Workshop on Low Temperature Electronics (WOLTE), 2022
The integration of Quantum Key Distribution (QKD) protocols in metropolitan networks, exploiting already deployed telecommunication fibers, requires particular attention due to the non-ideal environment in which the protocol operates. At present, Twin-field QKD is one of the most promising techniques to reach the extension of QKD transmission but its ...
Meda, Alice, Clivati, Cecilia, Virzi, Salvatore, Donadello, Simone, Mura, Alberto, Levi, Filippo, Genovese, Marco, Degiovanni, Ivo, Calonico, Davide   +8 more
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Information reconciliation for QKD

Quantum Information and Computation, 2011
Quantum key distribution (QKD) relies on quantum and classical procedures in order to achieve the growing of a secret random string ---the key--- known only to the two parties executing the protocol. Limited intrinsic efficiency of the protocol, imperfect devices and eavesdropping produce errors and information leakage from which the set of measured ...
David Elkouss, Jesús Martínez-Mateo, Vicente Martín   +2 more
openaire   +1 more source

Deployed QKD Networks in Europe

2023 Optical Fiber Communications Conference and Exhibition (OFC), 2023
We report several use-case demonstrations for quantum key distribution in deployed fiber networks. The tests were carried out under real world conditions at the end-user premises using commercial QKD systems.
Hübel, Hannes, Kutschera, Florian, Pacher, Christoph, Achleitner, Martin, Strasser, Werner, Vedovato, Francesco, Rossi, Edoardo, Picciariello, Francesco, Vallone, Giuseppe, Villoresi, Paolo, Calderaro, Luca, Martín, Vicente, Brito, Juan Pedro, Ortíz, Laura, Lopez, Diego, Pastor-Perales, Antonio, Geitz, Marc, Braun, Ralf-Peter, Rydlichowski, Piotr   +18 more
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Integration of QKD in WDM networks

2021 International Conference on Optical Network Design and Modeling (ONDM), 2021
The theme of the integration of Quantum Key Distribution (QKD) in existing WDM optical networks will be discussed. Some evaluations about a reduced-cost implementation of BB84 protocol for QKD will be presented, where a QKD channel in O band is added to classical C-band WDM channels in the same fiber.
Martelli, P, Gatto, A, Brunero, M, Bodanapu, D, Rapisarda, M, Comi, PM, Martinelli, M   +6 more
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Relayed-QKD and switched-QKD networks performance comparison considering physical layer QKD limitations

Optical Fiber Communication Conference (OFC) 2024
We experimentally evaluate the SKR generation for unoptimized QKD pairs in switched QKD and compare the performance of the switched-QKD with relayed-QKD networks to reveal they perform better for short distances and at large networks.
Nikolaos Makris, Alkinoos Papageorgopoulos, Persefoni Konteli, Iliana Tsoni, Konstantinos Tsimvrakidis, Ilias Papastamatiou, Kostas Christodoulopoulos, George T. Kanellos, Dimitris Syvridis   +8 more
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Implementations of QKD

2020
Chapter 12 provided a basic overview of the hardware components in a quantum key distribution (QKD) system. We also explored the Tokyo QKD Network built to test the threat resilience of QKD. In this chapter we'll delve into larger implementations of this technology, exploring the basics of a total of five major QKD networks.
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QKD BB84. A Taxonomy

2021 XLVII Latin American Computing Conference (CLEI), 2021
Mathias Zavala, Benjamín Barán
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Quantifying the security of a QKD protocol

2015 IEEE International Conference on Advanced Networks and Telecommuncations Systems (ANTS), 2015
In this paper we develop the concept of quantifying the security of a quantum cryptographic scheme. We focus on BB84 and develop a model for measuring the security offered by protocols that follow a similar model. We also present a new model for entropy of detection assuming a binomial probability distribution.
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